I tied a bunch of wax worms and maggots this fall. I had steelhead in mind, but I see no reason they wouldn't work for perch. I bet they do real well if I hooked a shiner on. I'll try them next time I go out and let you know how they work.
If you search for hise wax worm pattern you'll find a pic. The maggots are basically the same thing scaled down with no feet(nubs).